ci(fix): target dan for multiNet (#5926)

Description
Target dan network for igor

Motivation and Context
Upload artefacts to the correct network

How Has This Been Tested?
---

What process can a PR reviewer use to test or verify this change?
---

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Breaking Changes
---

- [x] None
- [ ] Requires data directory on base node to be deleted
- [ ] Requires hard fork
- [ ] Other - Please specify

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buildtools/multinet_envs.sh

@@ -10,10 +10,15 @@ v*-pre.*)
   export TARI_NETWORK_DIR=testnet
   ;;
 v*-rc.*)
-  echo "nextnet" 
+  echo "nextnet"
   export TARI_NETWORK=nextnet
   export TARI_NETWORK_DIR=nextnet
   ;;
+v*-dan.*)
+  echo "dan"
+  export TARI_NETWORK=igor
+  export TARI_NETWORK_DIR=testnetdan
+  ;;
 *)
   echo "mainnet"
   export TARI_NETWORK=mainnet